content: /*
   * Copyright 2016-present David Karnok
   *
   * Licensed under the Apache License, Version 2.0 (the "License");
   * you may not use this file except in compliance with the License.
   * You may obtain a copy of the License at
   *
   *     http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  
  package hu.akarnokd.rxjava3.operators;
  
  import java.io.IOException;
  
  import org.junit.Test;
  
  import io.reactivex.rxjava3.core.*;
  import io.reactivex.rxjava3.disposables.Disposable;
  import io.reactivex.rxjava3.functions.Predicate;
  
  public class ObservableIndexOfTest {
  
      @Test
      public void empty() {
          Observable.<Integer>empty()
          .compose(ObservableTransformers.indexOf(new Predicate<Integer>() {
              @Override
              public boolean test(Integer v) throws Exception {
                  return v == 5;
              }
          }))
          .test()
          .assertResult(-1L);
      }
  
      @Test
      public void found() {
          Observable.range(1, 10)
          .compose(ObservableTransformers.indexOf(new Predicate<Integer>() {
              @Override
              public boolean test(Integer v) throws Exception {
                  return v == 5;
              }
          }))
          .test()
          .assertResult(4L);
      }
  
      @Test
      public void notfound() {
          Observable.range(1, 10)
          .compose(ObservableTransformers.indexOf(new Predicate<Integer>() {
              @Override
              public boolean test(Integer v) throws Exception {
                  return v == 15;
              }
          }))
          .test()
          .assertResult(-1L);
      }
  
      @Test
      public void foundWithUnconditionalOnCompleteAfter() {
          new Observable<Integer>() {
              @Override
              protected void subscribeActual(Observer<? super Integer> observer) {
                  observer.onSubscribe(Disposable.empty());
                  observer.onNext(10);
                  observer.onComplete();
              }
          }
          .compose(ObservableTransformers.indexOf(new Predicate<Integer>() {
              @Override
              public boolean test(Integer v) throws Exception {
                  return v == 10;
              }
          }))
          .test()
          .assertResult(0L);
      }
  
      @Test
      public void predicateCrash() {
          Observable.range(1, 10)
          .compose(ObservableTransformers.indexOf(new Predicate<Integer>() {
              @Override
              public boolean test(Integer v) throws Exception {
                  throw new IOException();
              }
          }))
          .test()
          .assertFailure(IOException.class);
      }
  }
  